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+?RCS: $Id: warnflags.U,v 3.0 1993/08/18 12:10:02 ram Exp $
+?RCS: Copyright (c) 1991-1993, Raphael Manfredi
+?RCS: You may redistribute only under the terms of the Artistic Licence,
+?RCS: as specified in the README file that comes with the distribution.
+?RCS: You may reuse parts of this distribution only within the terms of
+?RCS: that same Artistic Licence; a copy of which may be found at the root
+?RCS: of the source tree for dist 3.0.
+?RCS: Orginal Author: Graham Stoney <>
+?RCS: $Log: warnflags.U,v $
+?RCS: Revision 3.0 1993/08/18 12:10:02 ram
+?RCS: Baseline for dist 3.0 netwide release.
+?MAKE:warnflags: cat cc contains Myread Guess Oldconfig Findhdr
+?MAKE: -pick add $@ %<
+?S: This variable contains any additional C compiler flags to generate
+?S: warnings from the compiler. It is up to the Makefile to use this.
+$cat <<EOH
+You may wish to compile with extra compiler warnings enabled.
+Note that doing so enhances your chance of receiving your free set of steak
+knives, particularly if you find any bugs and report them.
+If you don't want extra warnings, answer "none".
+case "$warnflags" in
+'') case "$cc" in
+ *gcc*)
+ dflt="-Wall -Wno-comment"
+ if $contains 'fprintf' `./findhdr stdio.h` >/dev/null 2>&1; then
+ :
+ else
+ dflt="$dflt -Wno-implicit"
+ fi
+ ;;
+ *) dflt="none";;
+ esac
+ ;;
+' ') dflt="none";;
+*) dflt="$warnflags";;
+rp="Any $cc flags to enable warnings?"
+. ./myread
+case "$ans" in
+none) warnflags=' ';;
+*) warnflags="$ans";;